Giant Defy Advanced Headset Kit headset-bearing-kit-santa-cruz-tallboy-2010-esi3155560 For all bikes using the

For all bikes using the FSA Orbit C-33-CX No:44-CX Headset

Packed With Lithium Grease : Keeps the bearings running smooth and protected from the elements

For all Liv Emolden

For Specialized Aethos Bikes

For all Santa Cruz Megatower Bikes

Giant Defy Advanced Headset Kit headset-bearing-kit-santa-cruz-tallboy-2010-esi3155560 For all bikes using theThis listing includes both the upper and lower headset bearings, two bearings included in sale. For Giant Defy Advanced bikes, compatible with all model years. Upper Bearing MR136 Lower Bearing MR137 GCR15 High Carbon Chromium Bearings: Chromium offers a corrosion resistance to the bearing, allowing you to get more use out on the trails and less time in the workshop changing bearings again due to rust and seizing. Buna NitrileRust Resistance Seals: